\[\boxed{\mathbf{1459}\mathbf{.}}\]
\[y = 3x - 1.\]
\[1)\ Выше\ оси\ Ox:\]
\[3x - 1 > 0\]
\[3x > 1\]
\[x > \frac{1}{3}.\]
\[Ответ:\ \ x > \frac{1}{3}.\]
\[2)\ Ниже\ оси\ Ox:\]
\[3x - 1 < 0\]
\[3x < 1\]
\[x < \frac{1}{3}.\]
\[Ответ:\ \ x < \frac{1}{3}.\]